Finding the Fourth Proportional to 319,616.70, 479,092.95 and 129,995.70
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Solution
The fourth proportional to 319,616.70, 479,092.95 and 129,995.70 is: 194,858.48
Step by Step Solution
- Step 1: Write the proportion equation
319,616.70 : 479,092.95 = 129,995.70 : x - Step 2: Convert to fraction form
319,616.70/479,092.95 = 129,995.70/x - Step 3: Cross multiply
319,616.70x = 479,092.95 × 129,995.70 - Step 4: Simplify right side
319,616.70x = 62,280,023,400.32 - Step 5: Solve for x
x = 62,280,023,400.32/319,616.70 - Step 6: Final answer
x = 194,858.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.